Feeler for looms



c. H. WARREN FEELER FOR LOOMS Filed July 18, 1921 2 S heetsfiSheet 1 Nov. 20, 1923. 11,474,985

C. H. WARREN F EELER FOR LooMs Filed July 18, 1921 2 Shets-Sheet 2 hit-raw Patented Nov. 20, 1923.

UNITED STATES PATENT OFFICE.

CHARLES H. WARREN, OF ATLANTA, GEORGIA. ASSIGNOR TO DRAPEB CORPORATION, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

FEELER ron Looms.

Application filed July 18, 1921.

bobbin before winding the yarn in the.

layers with which the bulk of the mass of yarn is built upon the bobbin. In practice it seems to be next to impossible to obtain uniform results in the spinning room so far as concerns the winding of the bunch of weft at the right place on the bobbins so as to insure the desired cooperation with the feeler on the loom. Some bunches are built on the bobbin too close to the head, others too far away from the head, and others in various intervening positions.

Now, it is the object of the present invention to provide a construction of feeler tip which will cooperate with the weft on the bobbin so as to insure the insertion of fresh weft before the depleted weft is entirely exhausted, regardless of whether or not the initial windings of weft are started on the bobbin in the right place, and whether the bunch is large or small.

The improvement is illustrated in the accompanying drawings, wherein- Figure 1 is a plan View of the feeler fmechanism showing the feeleritip in contact with the weft on a full bobbin. Fig. 2 is a cross section of a portion of the bobbin showing the rear end of the feeler in elevation, but partly broken away. Figs. 3, 4:, 5, 6, 7 and 8 are detailed views showing different conditions of the weft on the bobbin and the relation of the feeler tip thereto. Fig. 9 illustrates a modification of the feeler tip.

The side slipping guided feeler shank A,

has at its rear end. ailaterally extending tip B, which carries onfits rear face the feeler teeth. The teeth are rigid with the tip and are not arranged throughout the length of the tipas in theaforesaid patent, but consists of two grqiips of teeth spaced apart,

Serial No. 485,595.

the teeth being confined to the inner and outer ends of the tip. As shown in the drawin there are but two teeth, an inner tooth (J, at the inner or toe end of the tip, and an outer tooth D, at the outer or heel end of the tip. The tooth C, will be hereinafter designated as the toe of the feeler tip; and the tooth D, will be hereinafter designated as the heel of the feeler tip. The heel and toe project rearwardly beyond the rear face E, of the feeler tip to an extent equal to or greater than the distance which the bunch F (Figs. 5 and 8) projects beyond the shank Gr of the bobbin when it is sofar depleted as to render replenishment desirable.

The rear face E, of the feeler tip is not parallel with the axis of, the bobbin, but is at an inclination thereto as shown in the several figures of the drawings, the result being that the toe C, extends rearwardly toward the bobbin to a greater distance than does the heel D. This is well shown in Fig. '5, wherein the bared shank (i, of the bobbin is shown in contact with the toe, and the heel is so far forward of the shank of the bobbin that it does not touch the bunch F of weft. The setting of the feeler can be effected by utilizin the usual adjustments of the bracket on which the feeler is mounted so as to accommodate the feeler to different yarns, and a single correct setting will be given to serve as a guide in utilizing the invention.

A proper over all length of the feeler tip B, including the heel and toe is one inch. A correct setting of the heel and toe with respect to the bobbin is to have the toe project rearwardly one-eighth of an inch farther than the heel. That is to say, assuming the bobbin has a cylindrical shank, as shown in the drawings. when the too is in contact with the bobbin shank. as shown in Fig. 5, the rear end of the heel is one-eighth of an inch forward of the shank. A proper setting of the fcclcr with respect to the bobbin head J. when the shuttle is properly boxed at the detecting side ofthe lay, is to have the heel three-eighths of an inch to the right of the vertical plane intersecting the juncture between the head and shank of the bobbin. To bring the heel to this position there is an outward bend H, between the inclined shank A, and the tip end B, of the feeler. The setting here stated is illustrative only and it is a good average setting which if followed will give satiswith. The toe need not be sharp, and the of the side slip of the feeler.

drawings show the toe as having ablunt rear end.

Fig. 1 shows the parts of the feeler mechanism which immediately cooperate with the feeler shank A. These cooperating parts are the same as those of the aforesaid Patent No. 1,309,226. It now sufiices to say that the feeler shank is moved forwardly by the impact of the bobbin and it is moved vrearwardly by a spring R. The feeler shank is guided by the front swivel guide L, and the rear slotted guide M. The width of the slotted guide limits the extent lVhen the feeler slips. laterally, a controller N, is moved laterally, thereby I initiating the action of the weft replenishing mechanism so that the weft is replenished before the running weft is completely exhausted, as fully set forth in the aforesaid patent.

hile two teeth only are shown, and these are all that are necessary'in practice,

.more than one tooth might be employed at each end of the tip with a space between the two groups similar to the space shown between the heel and toe. Such a feeler tip is shown in Fig. 9 wherein there is a group 'of, two teeth at each end of the tip.

Fig. 1 shows the relation between the full mass 1, of weft and the feeler tip when the weft first makes contact with the feeler tip on the forward beat of the lay. The weft comes in contact onl with the toe. The full mass of weft is su ciently yielding so that the blunt toe effectively engages the weft so as to prevent any slipping of the toe upon the weft as the'lay completes its forward beat. 1

Fig. 3 illustrates the condition of the weft when it is so far depleted as to present a substantial cylindrical surface opposite both heel and toe. In this condition of the weft, it contacts only with the toe, but the mass is sufliciently yielding so thatthe toe effectively engages the weft without any side slipping during the remainder of the forward swing of the lay. 3

Fig. 4 shows the condition of the weft when it is so far depleted that the bobbin shank is bared opposite the toe, but the bunch of weft is of .a sufficient diameter so that it engages the heel. Fig. 4 shows the initial bunch as having been wound too close to the head J of the bobbin, but there is not premature side slipping to leave an undue amount of waste yarn on thebobbin because the engagement between the weft and the heel of the feeler is adequate to prevent side slip of the feeler.

It will here be noted that the impact of the weft on the heel alone is less effective in tending to cause side slip 'than when the impact is upon the toe alone, since the heel is nearer the vertical plane of the swivel L than is the toe.

Fig. 5 shows the bunch F of weft-wound close to the bobbin head, but so far reduced in diameter that it does not engage the heel when the shank of the bobbin engages the toe. In this case the impact of the smooth bobbin shank upon the. toe will cause the feeler to slip sidewise, there being no restraint due to engagement of. the heel by the weft. This side slippage is followed by weft replenishment, and there is sufficient yarn in the bunch'F to insure the replenishment before the yarn is completely exhausted, while at the same time there is no undue Waste of the weft.

Figs. 6 and 7 show a condition when the initial bunch F has been Wound too high up on the bobbin shank, that is to say, too far away from the head of the bobbin. Fig. 6 shows the full mass of yarn, and in this case the conical surface of the yarn mass encounters the toe and there will be no side sli Fig. 7 shows the yarn depleted to the initial bunch F, but still sufficiently compressible to enable the toe to adequately cling thereto to prevent side slip. As the yarn continues to be consumed in weaving from this bunch F shown in Fig. 7, there ultimately comes a condition when the yarn does not yield so that the blunt toe no longer clings thereto, whereupon the blunt toe slips on the yarn and the weft replenishment 00-...

curs. This happens while there is still? enough yarn to see the replenishing actionv through, but without undue waste.

Fig. 8 shows the bunch F at a position onthe bobbin shank intermediate between what is shown in Figs. 4 and 7. As here shown the bunch is opposite the heel and the bared shank of the bobbin is opposite the toe.

It also shows a condition wherein the bobbin shank engages the toe with the heel so far out of reach of the weft thatthe feeler can slip sidewise without any restraining engagement between the Weft and the heel I its-tip and rigid therewith, the teeth being in-two groups spaced apart and projecting beyond the rear face of the feeler and at different distances, the group at the outer heel end of the tip not extendin as far rearwardl 1 as does the group at t e inner toe end 0 the feeler tip.

2. A side slipping feeler having at its rear end a laterally extending tip W1th weft penetrating teeth rigid therewith projecting rearwardly therefrom at its inner and outer ends only and at different distances, the group at the inner end projecting farther rearwardly than the group at, the

outer end.

3. A side slipping feeler having two teeth at its tip and rigid therewith, said teeth bei 8 need a art and ro'ecti be 0nd the r eal face 0 the feele al: dii f e rent distances, the tooth at the outer heel 'end of the tip not extending rearwardly as far as does the tooth at the inner toe end of the feeler tip.

4. A side slipping feeler having at j its rear end a laterally extending tip with two spaced teeth projecting rearwardl'y therefrom at its inner and outer ends only and rigid therewith, the tooth at the inner end projecting farther rearwardly than the tooth at the outer end.

In witness whereof, I have hereunto signed my name.

CHARLES H. WARREN. 

